From the beginning days of year 2016, many SEOs and webmasters reported stronger SERP fluctuations in Google. As these people asking to Google for the update information, Gary Illyes from Google said that its a ‘core algorithm’.

After asks more on updates, Google share more information in a Q&A on Twitter about, saying that ‘We haven’t updated any Google animals, but Panda has become a part of Google Core Algorithm.